Miscellaneous Localities of Minerals. 229 
from Providence, on the Plainfield turnpike road. It was 
accidentally discovered during the late war, purified, and 
sent to market. By many it was considered equal, if not 
superior, to the Spanish Brown, and was much used as a 
substitute for it. It is of a brownish red, and blood red col- 
our, easily reduced to powder, and is so pure as to require 
but little preparation previous to being employed. 
14.. Amethyst,* in small quantities, at Bristol,,on the shore 
near the ferry. Many of the specimens are fragments of 
crystals. The colour is violet, of different shades, some 
very beautiful. The predominating rock here is a coarse 
grained granite, in a state of decomposition, traversed by 
wide veins of quartz. As but few if any of the specimens 
have been found in this rock, but most of them having 
been procured at low tide, itis probable that the rock which 
contains them is covered by water. 
Br amdenees R.I., March 29, 1824. 
Additional Communication in a Letter to the Editor, da- 
ted June 26. 
Great quantities of the Amethyst have been found with- 
in a few weeks past, most of which are fragments of very 
large crystals, of the hexaedral form ; the colour of some of 
them is far superior in beauty and delicateness of hue, to 
that of specimens from any other locality which I have 
ever seen. It occurs both East and West of the ferry- 
house, in detached pieces, and also in large veinst of 
quartz traversing a granite rock in a state of decomposition. 
This is the prevailing rock at the locality, and all of the 
specimens found in it, appear to be confined to quartz.} 
There is but little doubt that this will prove an important 
* This locality of Amethyst was mentioned in our last Number, on the 
authority of Professor Adams. We are informed that the place was first 
visited by Professor De Wolfe, but afterwards Mr. Webband Mr. Taylor 
spent a day in the research, and brought the locality into notice.—Ed. 
+ Professor Adams says, the rock is ‘ occasionally traversed by thin stre- 
ta of quartz;’’ but this is a mistake. 
tHe also speaks as though the amethyst were met with in other parts 
of the rock, besides the quartz ; he says *‘some specimens have been dis- 
covered by digging into the rock, especially that part of it which containg 
quartz ;’’—so far as I am able to judge, it is confined to the quartz alto- 
gether. 
